U.S. patents available from 1976 to present.
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Apparatus and method for integrating texture memory and interpolation logic in a computer system

Patent 5548709 Issued on August 20, 1996. Estimated Expiration Date: Icon_subject March 7, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Triangle processor for 3-D graphics display system
Patent #: 4945500
Issued on: 07/31/1990
Inventor: Deering

Method and apparatus for generating a texture mapped perspective view
Patent #: 5179638
Issued on: 01/12/1993
Inventor: Dawson, et al.

Method for generating addresses to textured graphics primitives stored in rip maps
Patent #: 5222205
Issued on: 06/22/1993
Inventor: Larson, et al.

Architecture for a high performance three dimensional graphics accelerator Patent #: 5392393
Issued on: 02/21/1995
Inventor: Deering

Inventors

Application

No. 206959 filed on 03/07/1994

US Classes:

345/552, Texture memory345/501, COMPUTER GRAPHIC PROCESSING SYSTEM345/531, Graphic display memory controller345/557Cache

Examiners

Primary: Powell, Mark R.
Assistant: Chauhan, U.

Attorney, Agent or Firm

International Class

G06F 012/00

Abstract

In a computer graphics system, a semiconductor chip used in performing texture mapping. Textures are input to the semiconductor chip. These textures are stored in a main memory. Cache memory is used to accelerate the reading and writing of texels. A memory controller controls the data transfers between the main memory and the cache memory. Also included within the same semiconductor chip is an interpolator. The interpolator produces an output texel by interpolating from textures stored in memory. The interpolated texel value is output by the semiconductor chip, thereby minimizing transmission bandwidth as well as redundant storage of texture maps in a multi-processor environment.

Other References

  • Graham J. Dunnett, et al. "The Image Chip for High Performance 3D Rendering", IEEE Computer Graphics & Applications vol. 12, No. 6, Nov. 1992, pp. 41-52
  • Williams, Tom: "80860 May Force Rethinking of Graphics System Architectures", Computer Design, v28, n9, p. 43(5) Jul. 1, 1989
  • Wirbel, L.: "Intel's i860 Takes High-End Graphics Lead", Electronic Engineering Times, Mar. 26, 1990, p.
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